Are there nonstop flights from Santiago (STI) to Houston (IAH)?

No. The fastest connection is via Miami, about 4h 15m of total flying time.

What is the fastest connection from Santiago (STI) to Houston (IAH)?

via Miami ≈ 4h 15m, via Fort Lauderdale ≈ 4h 17m, via Providenciales ≈ 4h 17m (estimated flying time, excluding layovers).

from 15,000 JAL miles, from 30,000 ANA miles (economy, one way, based on the published award charts).

Cibao International Airport (STI) to George Bush Intercontinental Airport (IAH)・2,754 km

No nonstop flights. The fastest connection is via Miami (MIA), about 4h 15m of flying time (layover not included).

With milesJAL 15,000 miles+ (via MIA)ANA 30,000 miles+ (via PTY)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

10 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.